diff options
| author | Petr Machata <petrm@nvidia.com> | 2025-06-17 01:44:19 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-06-18 04:18:46 +0300 |
| commit | f8337efa4ff5a27e6c1d4e384166413eecd21a65 (patch) | |
| tree | e2ca0b9e67801f92044a422714987e134a03d362 /include/uapi | |
| parent | 96e8f5a9fe2d91b9f9eb8b45cc13ce1ca6a8af82 (diff) | |
| download | linux-f8337efa4ff5a27e6c1d4e384166413eecd21a65.tar.xz | |
vxlan: Support MC routing in the underlay
Locally-generated MC packets have so far not been subject to MC routing.
Instead an MC-enabled installation would maintain the MC routing tables,
and separately from that the list of interfaces to send packets to as part
of the VXLAN FDB and MDB.
In a previous patch, a ip_mr_output() and ip6_mr_output() routines were
added for IPv4 and IPv6. All locally generated MC traffic is now passed
through these functions. For reasons of backward compatibility, an SKB
(IPCB / IP6CB) flag guards the actual MC routing.
This patch adds logic to set the flag, and the UAPI to enable the behavior.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/d899655bb7e9b2521ee8c793e67056b9fd02ba12.1750113335.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 3ad2d5d98034..873c285996fe 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -1398,6 +1398,7 @@ enum { IFLA_VXLAN_LOCALBYPASS, IFLA_VXLAN_LABEL_POLICY, /* IPv6 flow label policy; ifla_vxlan_label_policy */ IFLA_VXLAN_RESERVED_BITS, + IFLA_VXLAN_MC_ROUTE, __IFLA_VXLAN_MAX }; #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1) |